Calendar.



H. B. YOUNG.

CALENDAR. APPLICATION FILED APB. 11.1908.

Patented July 6, 1909.

UNITED sTA'r srATENT OFFICE.

HARRY BENTON YOUNG, OF MOUNT HOLLY, NEW JERSEY.

CALENDAR.

T 0 all whom it may concern:

Be it known that I, HARRY BENTON YOUNG, citizen of the United States,residing at 212 Clifton avenue, Mount Holly, in the county of Burlingtonand State of New Jersey, have invented certain new and usefulImprovements in Calend ars, of which the following is a specification.

My invention relates to calendars, more particularly to that type ofcalendar which is known as perpetual, and it consists in thecombinations, constructions and arrangements herein described andclaimed.

The object of my invention is to provide a device which is compact andconvenient and by which any day of any year (the number of yearsavailable being limited only by the size of the card) can be determinedwith ease and accuracy, and without the necessity of mentalcalculations, or the liability of making error through the incorrecttracing of intersecting columns. I accomplish this object by arrangingtwo charts or diagrams so that in certain relative positions sections onone chart are adapted to register with sections on the other chart,whereupon the desired information can be immediately and directly readoff from the proper chart which contains it.

My invention is illustrated in the accompanying drawings in whichFigure 1. shows a )lan of the larger chart,

and Fig. 2 shows a p an of the smaller chart.

Referring now to Fig. 1, I have shown therein a disk of septagonal shapeand de noted in general by A. From the seven corners of the disk radiallines, a, extend inwardly toward the center, 6, terminating about halfway between the center, 7), and the corners, c, of the disk. The sevendivisions thus provided contain. certain numerals, the latter beingarranged according to the following plan: The two outer rows of each ofthe seven divisions contain numerals representing years of thenineteenth century i. 6. years from 1800 to 1899. The next three rowscontain numerals representing years of the twentieth century t. 0. yearsfrom. 1900 to 2000. Between the fifth row of numerals and the center,I), is the name of a day in the week, the names in adjacent sectionsfollowing each other in regular order, reading from left to right orclockwise.

Fig. 2 shows another disk B which is also 'referably of septagonalshape. The radial lines a from the corners also divide this diskSpecification of Letters Patent.

Application filed April 11, 1908.

Patented July 6, 1909.

Serial No. 426,464.

into seven sections each containing numerals and abbreviations of .thenames of the months. The outer row of each section contains numeralsrepresenting days of the month, while between. these rows and the centerI) are abbreviations and names of the various months together with anumeral desi nating the number of days in the articu ar month with whichit is associate I construct my improved calendar by placing the disk Bupon the disk A and passmg a pivot pin through their centers. Thesmaller disk B may then be rotated about its center until its radiallines a register with the lines a of the larger disk or until itssectliorlis register with the sections of the larger C1S In order toshow the use to which the cal endar may be put I will take a concretecase. Sup ose it be desired to find out what day of tie week the 24th ofOctober 1857 fell upon. The year 1857 is first located and then thesmaller disk B is turned until the section marked Oct. registers withthat containing the year 1857. Now if the 24th day of the month befound, the day of the week on the large disk, immediately above thenumeral 24. on the small disk will be the day wanted. In this case. itis Saturday. It will be observed that certain years are inclosed incircles. These are the leap years. The months of January and Februaryhave two sections each on the small disk. When a leap year is taken andin connection therewith either one of the months of January or Februarythen only that month which is starred should be used: Thus for findingthe day of the week upon which Feb. 1 1, 1888 fell. that section. of thesmaller disk containing Feb. should be used. Obviously when a certainday is given the date corresponding to it can be found by my calendar,this being merely a reversal of the process al ready explained. Otheryears may be add ed to the calendar by enlarging the larger disk The twodisks may be of circular or other shape without departing from thespirit and scope of the invention.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent of the United States, is:

In a calendar, a large and a small disk pivotally connected together andeach being divided into exactly seven exposed sections by radial lines,the sections on one disk being adapted to register with those on theother, numerals re resenting years, and the ary and February each havingdistinctive name of a day of t eweek'm each sectionofy marks in thesections required to be used the larger disk, of said numerals thoserepre- With the leap year numerals.

senting leap years having distinctive marks, In testimony whereof IafliX my signature 5 and names of months in each section of the inpresence of two Witnesses.

smaller diskeach of the months except L T r w T 7 January and Februarybeing represented on HARRX BEN film 1 OUNG' the smaller disk in some oneof seven sec- Witnesses:

tions and January and February each being R. W. CARTER,

10 represented in two of said sections, the lanu- A. YV. KEELEY.

